Cables interconnected with tuned inerter damper for vibration mitigation

Cables interconnected with tuned inerter damper for vibration mitigation
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电缆与调谐惰性阻尼器互连以减轻振动

DOI:
10.1016/j.engstruct.2017.08.009
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发表时间:
2017-11
影响因子:
5.5
通讯作者:
Chen Lin
Chen Lin
中科院分区:
工程技术2区
文献类型:
--
作者:
Sun Limin;Hong Dongxiao;Chen Lin

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斜拉桥中的拉索容易受到风、风/雨以及间接由桥塔和桥面振动引起的振动。通过外部装置补充电缆阻尼是目前的常见做法。然而,对于长斜拉索,近锚固阻尼器提供的阻尼不再足够。在这种情况下,一个混合电缆网络组成的耗散设备和交叉领带被认为是一个很有前途的解决方案。本研究进一步建议将惯性元件嵌入电缆网络中,以提高其耗散能力。具体而言,系统的两个电缆互连的调谐惯性阻尼器(TID)进行了研究。通过复模态分析制定系统动力学,并通过参数分析表征系统复频率。找到了利用TID最大化单模阻尼的一般调谐原则,并提出了一种有效确定TID参数的近似方法。此外,通过与其他被动控制策略的多模态拉索振动控制的优势,所提出的系统。
Cables in cable-stayed bridges are susceptible to vibrations induced by wind, wind/rain and indirectly by bridge tower and deck vibrations. It is common practice nowadays to supplement cable damping through external devices. However, for long stay cables, the damping provided by near-anchorage dampers is no longer sufficient. A hybrid cable network consisting of both dissipative devices and cross-ties is found to be a promising solution in this scenario. This study further proposes to embed inerter components into cable networks to improve their dissipation capacity. Specifically, a system of two cables interconnected with a Tuned Inerter Damper (TID) is studied. The system dynamics is formulated via complex modal analysis and system complex frequencies are characterized via parametric analysis. General tuning principle has been found when using the TID to maximize single mode damping and an approximate method is presented for efficient determining the TID parameters for optimal tuning and the corresponding damping ratio. Furthermore, the advantage of proposed system is shown by comparing with other passive strategies for multi-mode cable vibration control.
柔性结构振动控制非线性阻尼器标定中的残余模态修正
DOI: 10.1016/j.jsv.2017.06.015
发表时间: 2017-10
影响因子: 4.7
作者:
Sun Limin;Chen Lin
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影响因子: 5.4
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发表时间: 2016-02
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通讯作者: J. Ahmad;Shaohong Cheng;F. Ghrib
DOI: 10.1061/(asce)st.1943-541x.0000847
发表时间: 2014-03
期刊: Journal of Structural Engineering-asce
影响因子: --
作者:
J. Ahmad;Shaohong Cheng
通讯作者: J. Ahmad;Shaohong Cheng